Alignment by maximization of mutual information
ICCV '95 Proceedings of the Fifth International Conference on Computer Vision
Deformable templates using large deformation kinematics
IEEE Transactions on Image Processing
| Hi-index | 0.00 |
This paper addresses the problem of accurately mapping echo planar image (EPI) data acquired for functional MRI studies to conventional T1 weighted anatomical MRI. In particular here we examine the correction of spin echo image distortion resulting from magnetic field inhomogeneity. To do this we must account for both geometric and intensity distortions within the EPI data. This approach combines ideas on multi-modality registration criteria, non-rigid registration and models of geometric and intensity distortion in MR image formation. Specifically the relationship between the geometric and intensity distortion in spin echo EPI imaging is used to constrain the geometric correction estimate and replaces the arbitrary smoothing energy term in non-rigid registration.